DE69718924D1 - FUSOGENIC LIPOSOME COMPOSITION AND METHOD - Google Patents

FUSOGENIC LIPOSOME COMPOSITION AND METHOD

Info

Publication number
DE69718924D1
DE69718924D1 DE69718924T DE69718924T DE69718924D1 DE 69718924 D1 DE69718924 D1 DE 69718924D1 DE 69718924 T DE69718924 T DE 69718924T DE 69718924 T DE69718924 T DE 69718924T DE 69718924 D1 DE69718924 D1 DE 69718924D1
Authority
DE
Germany
Prior art keywords
liposome
composition
target cells
hydrophobic polymers
liposome composition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69718924T
Other languages
German (de)
Other versions
DE69718924T2 (en
Inventor
J Martin
Samuel Zalipsky
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alza Corp
Original Assignee
Sequus Pharmaceuticals Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sequus Pharmaceuticals Inc filed Critical Sequus Pharmaceuticals Inc
Publication of DE69718924D1 publication Critical patent/DE69718924D1/en
Application granted granted Critical
Publication of DE69718924T2 publication Critical patent/DE69718924T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/10Dispersions; Emulsions
    • A61K9/127Liposomes
    • A61K9/1271Non-conventional liposomes, e.g. PEGylated liposomes, liposomes coated with polymers
    • A61K9/1272Non-conventional liposomes, e.g. PEGylated liposomes, liposomes coated with polymers with substantial amounts of non-phosphatidyl, i.e. non-acylglycerophosphate, surfactants as bilayer-forming substances, e.g. cationic lipids
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/10Dispersions; Emulsions
    • A61K9/127Liposomes
    • A61K9/1271Non-conventional liposomes, e.g. PEGylated liposomes, liposomes coated with polymers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00Antineoplastic agents
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S436/00Chemistry: analytical and immunological testing
    • Y10S436/829Liposomes, e.g. encapsulation

Abstract

A fusogenic liposome composition for delivering a liposome-entrapped compound into the cytoplasm of a target cell is described. The liposomes have an outer surface coating of chemically releasable hydrophilic polymer chains which shield hydrophobic polymers on the liposome outer surface. Release of the hydrophilic polymer chains exposes the hydrophobic polymers for interaction with outer cell membranes of the target cells to promote fusion of the liposome with the target cells. Also disclosed is a method for using the composition to deliver a compound to target cells, and a method for selecting suitable hydrophobic polymers for use in the composition.
DE69718924T 1996-10-11 1997-10-10 FUSOGENIC LIPOSOME COMPOSITION AND METHOD Expired - Fee Related DE69718924T2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US2826996P 1996-10-11 1996-10-11
PCT/US1997/018838 WO1998016202A2 (en) 1996-10-11 1997-10-10 Fusogenic liposome composition and method

Publications (2)

Publication Number Publication Date
DE69718924D1 true DE69718924D1 (en) 2003-03-13
DE69718924T2 DE69718924T2 (en) 2003-12-04

Family

ID=21842486

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69718924T Expired - Fee Related DE69718924T2 (en) 1996-10-11 1997-10-10 FUSOGENIC LIPOSOME COMPOSITION AND METHOD

Country Status (15)

Country Link
US (1) US5891468A (en)
EP (1) EP0932391B1 (en)
JP (1) JP2001504093A (en)
AT (1) ATE232086T1 (en)
AU (1) AU715063B2 (en)
BR (1) BR9712230A (en)
CA (1) CA2267904C (en)
DE (1) DE69718924T2 (en)
DK (1) DK0932391T3 (en)
ES (1) ES2191833T3 (en)
HK (1) HK1047550A1 (en)
IL (1) IL129292A0 (en)
PT (1) PT932391E (en)
TW (1) TW520297B (en)
WO (1) WO1998016202A2 (en)

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EP0932391A2 (en) 1999-08-04
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